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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2045) Simplify HH to decrease read load when nodes come back
Date Thu, 16 Jun 2011 17:43:47 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050589#comment-13050589
] 

Jonathan Ellis commented on CASSANDRA-2045:
-------------------------------------------

Code style is generally fine, though there's a few violations of brace-on-newline. :)

> Simplify HH to decrease read load when nodes come back
> ------------------------------------------------------
>
>                 Key: CASSANDRA-2045
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2045
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Chris Goffinet
>            Assignee: Nicholas Telford
>             Fix For: 1.0
>
>         Attachments: CASSANDRA-2045-simplify-hinted-handoff-001.diff, CASSANDRA-2045-simplify-hinted-handoff-002.diff
>
>
> Currently when HH is enabled, hints are stored, and when a node comes back, we begin
sending that node data. We do a lookup on the local node for the row to send. To help reduce
read load (if a node is offline for long period of time) we should store the data we want
forward the node locally instead. We wouldn't have to do any lookups, just take byte[] and
send to the destination.

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